Method for manufacturing molds or cores for foundry purpose, involves blowing shooting opening formed in core tool with cool gas having specific temperature which is lower than ambient temperature during two shooting processes

摘要

The method involves shooting and curing the mixture of sand or molding material and water soluble inorganic binder by a shooting unit by forming a shooting opening (12) in a core tool intended at a shooting plate (13). The shooting opening is blown with cool gas having temperature of 10 [deg] C which is lower than ambient temperature during two shooting processes. The moisture of cool gas is adjusted, so that formation of condensate in a region of the shooting opening is avoided. An independent claim is included for a device for manufacturing molds or cores from mixture of sand or molding material and water soluble inorganic binder.